CINCINNATI (AP) Vontaze Burfict is appealing a four-game suspension from the NFL for violating its policy on performance-enhancing substances, the third straight season that the Cincinnati Bengals linebacker is facing punishment from the league.

The suspension was first reported by ESPN. The Bengals had no comment on Burfict. They signed free agent linebacker Preston Brown to a one-year contract Friday, giving them depth at the position.

The Bengals have steadfastly supported Burfict, even giving him a three-year contract extension while he was suspended last year. They've had plenty of chances to get accustomed to playing without him.